Wildling (2018)

The film tells about a teenage girl named Anna, who spent all her childhood in a confinement. She was raised by a mysterious man in a hut in the forest. He constantly frightened her with stories of an eerie monster in the forest that eats children. Once, Anna is rescued by Sheriff Ellen Cooper. Now the girl thinks she can start a new life, but suddenly her body begins to change in a strange way. Anna realizes that there is some connection between her and the terrible legend she heard in her childhood.